Additive color printing using multiple color graphic layers

ABSTRACT

Methods and systems are provided for color printing. A three-dimensional object can be printed onto an article using the methods and systems. The three-dimensional object can include a lower color graphic layer printed onto an article, one or more transparent structural layers printed onto the lower color graphic layer, and an upper color graphic layer printed onto an uppermost layer of the one or more transparent structural layers. The upper color graphic layer and the lower color graphic layer collectively visually depict a color graphic image.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/424,445 filed Feb. 3, 2017, which claims the benefit of U.S.Provisional Application No. 62/291,884 filed Feb. 5, 2016, both of whichare incorporated by reference herein.

BACKGROUND

Embodiments relate generally to printing UV-curable graphic layers onsubstrates such as the fabric used to make articles of apparel such asshirts, shorts, pants, jackets, hats or caps, or to make uppers forarticles of footwear, such as running, training, jogging, hiking,walking, volleyball, handball, tennis, lacrosse, basketball shoes, andother similar articles of footwear, as well as to make other articlessuch as backpacks or tents.

Articles of apparel may be made of a woven or non-woven fabric, or of amesh material, or may be made of leather, synthetic leather or ofplastic materials. Articles of apparel may have items such as emblems orlogos on the sleeves, torso, pants leg, or other portions of the articleof apparel. Articles of apparel may also have abrasion-resistant,water-resistant or protective layers at, for example, the elbows, theshoulders, and/or the knees.

Embodiments disclosed in this application may be fabricated usingprinters or plotters that may be programmed to deposit layers of acrylicresin ink, polyurethane ink, TPU ink or silicone ink or other inks on afabric or other article. Such printers or plotters may be programmed tocover a two-dimensional portion of a fabric, for example, by moving aprinthead along a track in a first direction and moving the track in asecond direction that is orthogonal to the first direction. Otherprinters or plotters may move the printhead in a first direction whilemoving the printer platform in a second direction that is orthogonal tothe first direction, or may move the platform in both directions whilekeeping the printhead stationary.

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments can be better understood with reference to the followingdrawings and description. The components in the figures are notnecessarily to scale, emphasis instead being placed upon illustratingthe principles of the embodiments. Moreover, in the figures, likereference numerals designate corresponding parts throughout thedifferent views.

FIG. 1 shows a schematic diagram of a printing system, in accordancewith an exemplary embodiment;

FIG. 2 shows a CMYK Venn diagram, in accordance with an exemplaryembodiment;

FIG. 3 shows a perspective view of a portion of a printing device havingCMYK printing capabilities, in accordance with an exemplary embodiment;

FIG. 4 shows a block diagram of a process for printing athree-dimensional object having multiple graphic layers, in accordancewith an exemplary embodiment;

FIG. 5 shows a schematic diagram of the printing system of FIG. 1receiving a substrate and receiving a color graphic design, inaccordance with an exemplary embodiment;

FIG. 6 shows a schematic view of dispensing a first print material ontoa substrate to form a lower color graphic layer, in accordance with anexemplary embodiment;

FIG. 7 shows a schematic view of curing the first print material of FIG.6 on the substrate to form the lower color graphic layer, in accordancewith an exemplary embodiment;

FIG. 8 shows a schematic view of dispensing a second print material ontothe substrate of FIG. 6 to form the lower color graphic layer, inaccordance with an exemplary embodiment;

FIG. 9 shows a schematic view of dispensing a third print material ontothe substrate of FIG. 6 to form the lower color graphic layer, inaccordance with an exemplary embodiment;

FIG. 10 shows an exemplary lower color graphic layer of athree-dimensional object, in accordance with an exemplary embodiment;

FIG. 11 shows an exemplary transparent structural layer of athree-dimensional object printed onto the lower color graphic layer ofFIG. 10, in accordance with an exemplary embodiment;

FIG. 12 shows an exemplary upper color graphic layer of athree-dimensional object printed onto the transparent structural layerof FIG. 11, in accordance with an exemplary embodiment;

FIG. 13 shows the exemplary three-dimensional object of FIG. 12 with anabrasion, in accordance with an exemplary embodiment;

FIG. 14 shows an alternative three-dimensional object with an abrasion;

FIG. 15 shows an optional protective transparent layer of athree-dimensional object printed onto the upper color graphic layer ofFIG. 12, in accordance with an exemplary embodiment;

FIG. 16 shows an exemplary non-white substrate for a three-dimensionalobject, in accordance with an exemplary embodiment;

FIG. 17 shows an exemplary white layer of a three-dimensional objectprinted onto the non-white substrate of FIG. 16, in accordance with anexemplary embodiment;

FIG. 18 shows an exemplary three-dimensional object printed onto thewhite layer of FIG. 17, in accordance with an exemplary embodiment;

FIG. 19 shows an optional protective transparent layer of athree-dimensional object printed onto the upper color graphic layer ofFIG. 18, in accordance with an exemplary embodiment;

FIG. 20 shows an exemplary three-dimensional object with an upper colorgraphic layer and a lower color graphic layer having different pigments,in accordance with an exemplary embodiment;

FIG. 21 shows an exemplary three-dimensional object including an uppercolor graphic layer, an intermediate color graphic layer, and a lowercolor graphic layer and including transparent structural layers, inaccordance with an exemplary embodiment; and

FIG. 22 shows an exemplary three-dimensional object including an uppercolor graphic layer, an intermediate color graphic layer, a lower colorgraphic layer, and opaque structural layers, in accordance with anexemplary embodiment.

DETAILED DESCRIPTION

For clarity, the detailed descriptions herein describe certain exemplaryembodiments, but the disclosure in this application may be applied toany method for fabricating an article including any suitable combinationof features described herein and recited in the claims. In particular,although the following detailed description describes certain exemplaryembodiments, it should be understood that other embodiments may be usedfor the fabrication of other articles of footwear or apparel.

As used herein, the terms “printing device,” “printer,” “plotter,” “3Dprinter,” “three-dimensional printing system,” or “3D printing system”may refer to any type of system that can print multiple layers onto afabric, an article of footwear, an article of apparel or other article,including, for example, sign and graphics printers. The printers may useany appropriate type of UV-curable ink, including acrylic resin ink,polyurethane ink, TPU ink or silicone ink or any other appropriate ink.

The description uses the term “color graphic” or “color graphic image”to refer to any 2D or 3D graphical design. As discussed throughout thisdetailed description and in the claims two or more layers of printedmaterial may collectively visually depict a particular color graphicimage. That is, when superimposed and viewed from one or more particularangles, the two layers visually combine to show the color graphic image.

In one aspect, a method of printing a three-dimensional object onto asubstrate using a printing device is provided. The method includesreceiving color graphic design information at the printing device andreceiving the substrate at the printing device. The color graphic designinformation represents a color graphic image, also referred to simply asa color graphic throughout this detailed description. The method furtherincludes printing a lower color graphic layer of the three-dimensionalobject onto the substrate using the color graphic design information.The method further includes printing a transparent structural layer ofthe three-dimensional object onto the lower color graphic layer andprinting an upper color graphic layer of the three-dimensional objectonto the transparent structural layer using the color graphic designinformation. A combination of the upper color graphic layer and thelower color graphic layer visually matches the color graphic.

In another aspect, a method of printing a three-dimensional object ontoa non-white substrate using a printing device is provided. The methodincludes receiving color graphic design information at the printingdevice and receiving the non-white substrate at the printing device. Thecolor graphic design information represents a color graphic. The methodfurther includes printing a white layer of the three-dimensional objectonto the non-white substrate and printing a lower color graphic layer ofthe three-dimensional object onto the white layer using the colorgraphic design information. The method further includes printing atransparent structural layer of the three-dimensional object onto thelower color graphic layer and printing an upper color graphic layer ofthe three-dimensional object onto the transparent structural layer usingthe color graphic design information. A combination of the upper colorgraphic layer and the lower color graphic layer visually matches thecolor graphic.

In another aspect, a method of printing a three-dimensional object ontoa substrate using a printing device is provided. The method includesreceiving color graphic design information at the printing device andreceiving the substrate at the printing device. The color graphic designinformation representing a color graphic. The method further includesprinting a lower color graphic layer of the three-dimensional objectonto the substrate using the color graphic design information. Themethod further includes printing an inner transparent structural layerof the three-dimensional object onto the lower color graphic layer andprinting an intermediate color graphic layer of the three-dimensionalobject onto the inner transparent structural layer using the colorgraphic design information. The method further includes printing anouter transparent structural layer of the three-dimensional object ontothe intermediate color graphic layer and printing an upper color graphiclayer of the three-dimensional object onto the outer transparentstructural layer using the color graphic design information. Acombination of the upper color graphic layer, the intermediate colorgraphic layer, and the lower color graphic layer visually matches thecolor graphic.

In another aspect, a method of printing a three-dimensional object ontoa non-white substrate using a printing device is provided. The methodincludes receiving color graphic design information at the printingdevice and receiving the non-white substrate at the printing device. Thecolor graphic design information representing a color graphic. Themethod further includes printing a white layer of the three-dimensionalobject onto the non-white substrate and printing a lower color graphiclayer of the three-dimensional object onto the white layer using thecolor graphic design information. The method further includes printingan inner transparent structural layer of the three-dimensional objectonto the lower color graphic layer and printing an intermediate colorgraphic layer of the three-dimensional object onto the inner transparentstructural layer using the color graphic design information. The methodfurther includes printing an outer transparent structural layer of thethree-dimensional object onto the intermediate color graphic layer andprinting an upper color graphic layer of the three-dimensional objectonto the outer transparent structural layer using the color graphicdesign information. A combination of the upper color graphic layer, theintermediate color graphic layer, and the lower color graphic layervisually matches the color graphic.

In another aspect, a method of printing a three-dimensional object ontoa substrate using a printing device is provided. The method includesreceiving color graphic design information at the printing device andreceiving the substrate at the printing device. The color graphic designinformation representing a color graphic. The method further includesprinting a transparent base layer of the three-dimensional object ontothe substrate and printing a lower color graphic layer of thethree-dimensional object onto the transparent base layer using the colorgraphic design information. The method further includes printing aninner transparent structural layer of the three-dimensional object ontothe lower color graphic layer and printing an intermediate color graphiclayer of the three-dimensional object onto the inner transparentstructural layer using the color graphic design information. The methodfurther includes printing an outer transparent structural layer of thethree-dimensional object onto the intermediate color graphic layer andprinting an upper color graphic layer of the three-dimensional objectonto the outer transparent structural layer using the color graphicdesign information. A combination of the upper color graphic layer, theintermediate color graphic layer, and the lower color graphic layervisually matches the color graphic.

In another aspect, a method of printing a three-dimensional object ontoa substrate using a printing device is provided. The method includesreceiving color graphic design information at the printing device andreceiving the substrate at the printing device. The color graphic designinformation includes a set of graphic information representing a colorgraphic. The method further includes printing a lower color graphiclayer of the three-dimensional object onto the substrate using the setof graphic information. The lower color graphic layer visually matchesthe color graphic. The method further includes printing an inner opaquestructural layer of the three-dimensional object onto the lower colorgraphic layer and printing an intermediate color graphic layer of thethree-dimensional object onto the inner opaque structural layer usingthe set of graphic information. The intermediate color graphic layervisually matches the color graphic. The method further includes printingan outer opaque structural layer of the three-dimensional object ontothe intermediate color graphic layer and printing an upper color graphiclayer of the three-dimensional object onto the outer transparentstructural layer using the set of graphic information. The upper colorgraphic layer visually matches the color graphic.

In another aspect, a method of printing a three-dimensional object ontoa non-white substrate using a printing device is provided. The methodincludes receiving color graphic design information at the printingdevice and receiving the non-white substrate at the printing device. Thecolor graphic design information includes a set of graphic informationrepresenting a color graphic. The method further includes printing awhite layer of the three-dimensional object onto the non-white substrateand printing a lower color graphic layer of the three-dimensional objectonto the white layer using the set of graphic information. The lowercolor graphic layer visually matches the color graphic. The methodfurther includes printing an inner opaque structural layer of thethree-dimensional object onto the lower color graphic layer and printingan intermediate color graphic layer of the three-dimensional object ontothe inner opaque structural layer using the set of graphic information.The intermediate color graphic layer visually matches the color graphic.The method further includes printing an outer opaque structural layer ofthe three-dimensional object onto the intermediate color graphic layerand printing an upper color graphic layer of the three-dimensionalobject onto the outer transparent structural layer using the set ofgraphic information. The upper color graphic layer visually matches thecolor graphic.

In each of the aspects described above multiple structural layers couldbe used between each color graphic layer. For example, two or more innerstructural layers (transparent or opaque) could be used between an innergraphic layer and an intermediate graphic layer. Likewise, two or moreouter structural layers (transparent or opaque) could be used between anintermediate graphic layer and an outer graphic layer.

Other systems, methods, features, and advantages of the embodiments willbe, or will become, apparent to one of ordinary skill in the art uponexamination of the following figures and detailed description. It isintended that all such additional systems, methods, features, andadvantages be included within this description and this summary bewithin the scope of the embodiments.

Although the drawings and the textual description herein only describeembodiments as they may be used on certain articles of footwear orcertain articles of apparel, the descriptions herein may also be appliedto other articles of footwear and/or to other articles of apparel,including, for example, articles of footwear such as running, training,jogging, hiking, walking, volleyball, handball, tennis, lacrosse,basketball shoes and other similar articles of footwear, or articles ofapparel such as shorts, shirts, jerseys, jackets, pants, gloves, wristbands, head bands, arm bands, hats or caps, as well as to other articlessuch a backpacks or tents.

FIG. 1 is a schematic view of an embodiment of three-dimensionalprinting system 100, also referred to simply as printing system 100.Some embodiments of the printing system can include provisions thatdistribute one or more functions among different devices of the printingsystem. As shown, printing system 100 may include printing device 102,computing system 104, and network 106. In other embodiments, theprinting system may be a single device or component (not shown).

Some embodiments of the printing device can include provisions thatpermit color printing. In some embodiments, the printing system may useCMYK printing. In other embodiments, the color printing may be conductedusing another suitable printing method.

In embodiments where color printing is conducted using CMYK printing,any suitable device, protocol, standard, and method may be used tofacilitate the color printing. As used herein, “CMYK” may refer to fourpigments used in color printing: “C” for a cyan pigment, “M” for amagenta pigment, “Y” for a yellow pigment, and “K” for a key pigment. Insome cases, the key pigment may be a black pigment. An example of aprinting device using CMYK printing is disclosed in Miller, U.S. PatentPublication Number 2015-0002567, published on Jan. 1, 2015, titled“Additive Color Printing” (U.S. patent application Ser. Number13/927,551, filed on Jun. 26, 2013), which application is hereinincorporated by reference and referred to hereafter as the “ColorPrinting” application. In some embodiments, printing system 100 caninclude one or more features of the systems, components, devices, andmethods disclosed in the Color Printing application to facilitate colorprinting. For example, the printing device may be configured to print animage by dispensing droplets of a print material including one or morepigments onto a substrate. As used herein, droplets may refer to anysuitable volume of print material. For example, a droplet may be onemilliliter of print material. In other embodiments, the printing systemmay use other systems, components, devices, and methods.

In embodiments where the printing system includes provisions thatdistribute one or more functions among different devices of the printingsystem, any suitable division may be used. In some embodiments, printingsystem 100 can include provisions that control and/or receiveinformation from printing device 102. These provisions can includecomputing system 104 and network 106. Generally, the term “computingsystem” refers to the computing resources of a single computer, aportion of the computing resources of a single computer, and/or two ormore computers in communication with one another. Any of these resourcescan be operated by one or more human users. In some embodiments,computing system 104 may include one or more servers. In someembodiments, a print server may be primarily responsible for controllingand/or communicating with printing device 102, while a separate computer(e.g., desktop, laptop, or tablet) may facilitate interactions with auser. Computing system 104 can also include one or more storage devicesincluding, but not limited to, magnetic, optical, magneto-optical,and/or memory, including volatile memory and non-volatile memory.

In some embodiments, any suitable hardware or hardware systems may beused to facilitate provisions that control and/or receive informationfrom printing device 102. In some embodiments, where a computing systemis used, computing system 104 may include central processing device 185,viewing interface 186 (e.g., a monitor or screen), input devices 187(e.g., keyboard and mouse), and software for creating color graphicdesign information 189 for printing a three-dimensional object. As usedherein, color graphic design information may include any suitableinformation to facilitate formation of a three-dimensional object tohave an appearance identical to a color graphic represented by the colorgraphic design information. Examples of a color graphic may includelogos, trademarks, customized images, names, and the like. In someinstances, the color graphic may be a personalized finishing for aparticular customer. In other embodiments, other forms of hardwaresystems may be used.

Generally, any suitable information may be used to facilitate provisionsfor software for designing a color graphic design for athree-dimensional object. In at least some embodiments, software fordesigning a color graphic design of a printed structure may include notonly information about the geometry of the structure but alsoinformation related to the materials required to print various portionsof the structure. In other embodiments, different information may beused.

Generally any suitable design structure may be used to transform thedesign into information that can be interpreted by printing device 102(or a related print server in communication with printing device 102).In some embodiments, printing system 100 may be operated as follows toprovide one or more structures that have been formed using athree-dimensional printing, or additive process. Computing system 104may be used to design a structure. This may be accomplished using sometype of CAD software or other kind of software. The design may then betransformed into information that can be interpreted by printing device102 (or a related print server in communication with printing device102). In some embodiments, the design may be converted to athree-dimensional printable file, such as a stereolithography file (STLfile); in other cases, the design may be converted into a differentdesign structure.

In some embodiments where the printing system includes provisions thatdistribute one or more functions among different devices of printingsystem 100, any suitable protocol, format, and method may be used tofacilitate communication among the devices of printing system 100. Insome embodiments, these communications are conducted using network 106.In other cases, these communications may be conducted directly betweendevices of printing system 100.

In some embodiments, the network may use any wired or wirelessprovisions that facilitate the exchange of information between computingsystem 104 and printing device 102. In some embodiments, network 106 mayfurther include various components such as network interfacecontrollers, repeaters, hubs, bridges, switches, routers, modems, andfirewalls. In some embodiments, network 106 may be a wireless networkthat facilitates wireless communication between two or more systems,devices, and/or components of printing system 100. Examples of wirelessnetworks include, but are not limited to, wireless personal areanetworks (including, for example, Bluetooth), wireless local areanetworks (including networks utilizing the IEEE 802.11 WLAN standards),wireless mesh networks, mobile device networks as well as other kinds ofwireless networks. In other cases, network 106 could be a wired networkincluding networks whose signals are facilitated by twister pair wires,coaxial cables, and optical fibers. In still other cases, a combinationof wired and wireless networks and/or connections could be used.

Some embodiments of the printing system can include provisions thatpermit printed structures to be printed directly onto one or morearticles. The term “articles” is intended to include both articles offootwear (e.g., shoes) and articles of apparel (e.g., shirts, pants,etc.). As used throughout this disclosure, the terms “article offootwear” and “footwear” include any footwear and any materialsassociated with footwear, including an upper, and may also be applied toa variety of athletic footwear types, including baseball shoes,basketball shoes, cross-training shoes, cycling shoes, football shoes,tennis shoes, soccer shoes, and hiking boots. As used herein, the terms“article of footwear” and “footwear” also include footwear types thatare generally considered to be nonathletic, formal, or decorative,including dress shoes, loafers, sandals, slippers, boat shoes, and workboots.

While the disclosed embodiments are described in the context of articlesof footwear, various embodiments may further be equally applied to anyarticle of clothing, apparel, or equipment that includesthree-dimensional printing. For example, various embodiments may beapplied to hats, caps, shirts, jerseys, jackets, socks, shorts, pants,undergarments, athletic support garments, gloves, wrist/arm bands,sleeves, headbands, any knit material, any woven material, any nonwovenmaterial, sports equipment, etc. Thus, as used herein, the term “articleof apparel” may refer to any apparel or clothing, including any articleof footwear, as well as hats, caps, shirts, jerseys, jackets, socks,shorts, pants, undergarments, athletic support garments, gloves,wrist/arm bands, sleeves, headbands, any knit material, any wovenmaterial, any nonwoven material, and the like.

Referring to FIG. 1, which shows an embodiment including set of articles130, in other embodiments, different articles may be used. As shown, setof articles 130 includes article of footwear 136, soccer ball 134, andshin guard 132. In other embodiments, set of articles 130 may bedifferent.

Generally any suitable surface of the article may be used as a substrateto receive the three-dimensional objects. In some embodiments, thearticle includes a surface in a flattened configuration. Referring toFIG. 1, shin guard 132 may have a front surface and/or a back surface ina flattened configuration. In other embodiments, an article may includea surface having a three-dimensional configuration. For example, a sidesurface of article of footwear 136 may have a three-dimensionalconfiguration. In another example, a top surface of soccer ball 134 mayhave a three-dimensional configuration. In other embodiments, theprinting device and/or printing system may print onto other surfaces.

Some embodiments of the printing system can include provisions thatpermit printing directly onto the article. In other cases, thethree-dimensional object is first printed onto a release layer and thentransferred onto the article.

In some embodiments any suitable material may be used to form thearticle to facilitate use of the article. In some embodiments, printingdevice 102 may be capable of printing onto the surfaces of variousmaterials such as a textile, natural fabric, synthetic fabric, knit,woven material, nonwoven material, mesh, leather, synthetic leather,polymer, rubber, and foam, or any combination of them, without the needfor a release layer interposed between a substrate and the bottom of theprint material, and without the need for a perfectly or near perfectlyflat substrate surface on which to print.

In some embodiments, the articles may be customizable. As used herein, acustomizable article may be preprocessed and unfinished. Referring toFIG. 1, processing of article of footwear 136 may include cutting anupper in a particular shape and/or treating the upper to improvedurability for use as footwear. In some examples, the upper may befolded and attached to a sole. In other examples, the upper may be in aflat configuration (see FIG. 5). In the example of FIG. 1, article offootwear 136 may not be finished with a mass production design. Instead,article of footwear 136 may have a white or gray color that may besuitable for finishing with a personalized style for a particularcustomer.

In those instances where CMYK printing is used, CMYK may produce orapproximate any color in the visible spectrum by printing andintermixing various combinations of pigments, as exemplified by the CMYKVenn diagram shown in FIG. 2. Referring to FIG. 2, pigments for thecolors cyan 110, magenta 112, and yellow 114 may be intermixed toproduce one or more colors of red 118, green 120, and blue 122 as shown.Further intermixing of pigments may be used to produce many more colorsbeyond red 118, green 120, and blue 122, cyan 110, magenta 112, andyellow 114.

As indicated above, some embodiments of CMYK printing can includeprovisions that permit intermixing of two or more pigments. In someembodiments, two or more pigments may be intermixed before dispensing.For example, a pigment for yellow 114 and a pigment for cyan 110 may bemixed to form green 120. In the example, the pigments for green 120 maybe premixed and stored in a cartridge for printing. In other cases, twoor more pigments may be intermixed during printing. For example, thepigment for yellow 114 and the pigment for cyan 110 may be dispenseddirectly onto a substrate and intermix on the substrate to form green120. In other embodiments, other intermixing of two or more pigments maybe used.

Some embodiments of CMYK may print black by intermixing pigments forcyan, magenta, and yellow. Referring to FIG. 2, pigments for cyan 110,magenta 112, and yellow 114 may be intermixed to produce black 116. Insome embodiments, black produced by intermixing pigments for cyan,magenta, and yellow may appear visually to an observer as a lighterblack instead of a very dark or saturated black. So, in those instanceswhere black produced by intermixing appears visually to an observer as alighter black, a CMYK printing device may also include a separatecartridge or reservoir for having premixed pigments for producing black116.

In some embodiments, CMYK print material may be considered subtractivein nature, in that they may reduce the whiteness of an underlying whitebase when viewed by reflected visible light by masking it with one ormore layers of printed CMYK print material. In other embodiments, CMYKprint material may include a white that may enhance the whiteness of anunderlying white base when viewed by reflected visible light.

In some embodiments, any suitable print material may be used tofacilitate color printing. In some embodiments, CMYK print materials maybe water based. In other embodiments, CMYK print materials may be oilbased. In some embodiments, CMYK print material may include a structuralprint material. In other embodiments, CMYK print material may includeonly pigments.

In embodiments where a CMYK print material includes a structural printmaterial, the structural material may have any suitable property. Insome embodiments, CMYK print materials may include a clear and/ortransparent structural print material. In some embodiments, CMYK printmaterials may include an opaque structural print material. In someembodiments, the CMYK print material may include a translucentstructural print material. In other embodiments, the structural materialmay have a combination of transparent structural material and/ortranslucent structural material.

Referring to FIG. 3, which shows an embodiment of CMYK printing,printing device 102 is shown to include printhead assembly 140. Theprinthead assembly may include any number of cartridges. In someembodiments, printhead assembly 140 may include cartridge 142 havingcyan print material, cartridge 144 having magenta print material,cartridge 146 having yellow print material, cartridge 148 having key(“K”) or black print material, cartridge 150 having white (“W”) printmaterial, and cartridge 152 having clear (“CL”) print material. In otherembodiments, the printhead assembly may use other cartridges. While onecartridge for each material is depicted in FIG. 3, consistent with someembodiments, printing device 102 may contain more than one cartridge forone or more of the print materials of printhead assembly 140. That is,printing device 102 may include a second clear cartridge (not shown). Inother embodiments, printing device 102 may include other cartridges.

Some embodiments of the printing device can include provisions thatpermit any suitable color to be clear and/or transparent. In someembodiments, colors in the visible spectrum may include clear and/ortransparent structural print material. Referring to FIG. 3, the cyanprint material contained in cartridge 142 may include clear and/ortransparent structural print material. In the example, the magenta printmaterial contained in cartridge 144 may include clear and/or transparentstructural print material. In the example, the yellow print materialcontained in cartridge 146 may include clear and/or transparentstructural print material. In other embodiments, fewer and/or additionalcolors may include clear and/or transparent structural print material.

Some embodiments of the printing device can include provisions thatpermit any suitable color to be opaque. In some embodiments, the printmaterial used to print colors in the visible spectrum may include opaquestructural print material. Referring to FIG. 3, the white print materialcontained in cartridge 150 may include opaque structural print material.In the example, the key print material contained in cartridge 148 mayinclude opaque structural print material. In such instances, the printmaterial may include any suitable pigment, for example, a transparentpigment, an opaque pigment, a translucent pigment, and the like. In someembodiments, colors in the visible spectrum may be printed using one ormore pigments that are opaque. Referring to FIG. 3, the white printmaterial contained in cartridge 150 may include an opaque white pigment.In the example, the key print material contained in cartridge 148 mayinclude an opaque key pigment and/or an opaque black pigment. In suchinstances, the print material may include any suitable structural printmaterial, for example, a transparent structural print material, anopaque structural print material, a translucent structural printmaterial, and the like. In other embodiments, other provisions maypermit a color to be opaque.

Some embodiments of the printing device can include provisions thatpermit intermixing of two or more pigments. In some embodiments, theprinting device may intermix two or more pigments during printing.Referring to FIG. 3, printing device 102 may dispense droplets 170containing yellow print material from cartridge 146 and cyan printmaterial from cartridge 142 directly onto substrate 160. In the example,droplets 170 may intermix on substrate 160 to form green print material.In other cases, printing device 102 may intermix two or more pigmentsbefore dispensing. For example, a pigment of yellow print material and apigment of cyan print material may be intermixed to form a green printmaterial (not shown). In the example, the green print material may bepremixed and stored in a cartridge of printhead assembly 140 forprinting (not shown). Other embodiments may omit provisions that permitintermixing of two or more pigments.

Some embodiments of the printing device may include provisions thatpermit the printhead assembly to be moved across the substrate tofacilitate printing of features, such as images, graphics, designs, andtext onto the substrate. In some embodiments, the printing device maymove the printhead assembly along the substrate. In other embodiments,the printing device may move the substrate in relation to the printheadassembly.

In embodiments where the printing device moves the printhead assembly,the printing device may move the printhead assembly in a directionparallel to any suitable number of axes. In some embodiments, theprinting device may move the printhead assembly along a printingsurface. Referring to FIG. 3, printing device 102 may move printheadassembly 140 along substrate 160 to facilitate a printing onto substrate160. In the example, printing device 102 may move printhead assembly 140parallel to first axis 156 and/or parallel to second axis 158. As shown,first axis 156 may extend parallel to substrate 160 and/or perpendicularto second axis 158. In the example, second axis 158 may extend parallelto substrate 160 and/or perpendicular to first axis 156. In someembodiments, the printing device may raise or lower the printheadassembly. Referring to FIG. 3, printing device 102 may raise or lowerprinthead assembly 140 along third axis 154. As shown, third axis 154may be normal to substrate 160 and perpendicular to first axis 156and/or second axis 158. In other embodiments, the printing device maymove the printhead assembly relative to the substrate differently.

In embodiments where the printing device moves the substrate, theprinting device may move the substrate in a direction parallel to anysuitable number of axes. In some embodiments, the printing device maymove the substrate horizontally with the printhead assembly. Referringto FIG. 3, printing device 102 may move substrate 160 parallel to firstaxis 156 and/or parallel to second axis 158. In some embodiments, theprinting device may move the substrate vertically with the printheadassembly. Referring to FIG. 3, printing device 102 may raise or lowersubstrate 160 relative to printhead assembly 140 in a direction parallelwith third axis 154. In other embodiments, the printing device may movethe substrate relative to the printhead assembly differently.

FIG. 4 shows a block diagram of a process for printing athree-dimensional object onto a substrate, in accordance with anexemplary embodiment. The various steps of FIG. 4 may be discussed withrespect to FIGS. 5-12. In some embodiments, the steps of FIG. 4 use CMYKprinting. In other cases, other methods, techniques, and/or processesmay be used. In some embodiments, the steps of FIG. 4 may be implementedusing the system illustrated in FIG. 1. In other cases, other systemsand/or devices may be used. It should be understood that additionaland/or fewer steps may be used. The processes illustrated in FIGS. 5-12are for illustrative purposes only.

In some embodiments, color graphic design information may be received,as in step 202, by a printing device. As used herein, color graphicdesign information may refer to any suitable information to facilitateprinting a three-dimensional object to be visually identical to a colorgraphic. Such information may include one or more sets of graphicinformation as described further below. In some embodiments, the colorgraphic design information may be provided by a human user. Referring toFIG. 5, a human user, such as a customer or designer, may generate colorgraphic design information 189 according to personal preferences usingcomputing system 104. It should be understood that in some embodiments,at least a portion of the color graphic design information may beautomatically generated by a computing device. In the example, computingsystem 104 may transmit color graphic design information 189 usingprinting device 102, which may be locally connected to computing system104 or may be remotely connected to computing system 104 using network106. In other embodiments, the color graphic design information may bereceived differently by the printing device.

Generally, the color graphic design information may include any suitablenumber of sets of graphic information to represent a color graphic. Asused herein, a set of graphic information may refer to any suitableimage that by itself and/or in combination with one or more other setsof graphic information is visually identical to the color graphicrepresented by color graphic design information. In some embodiments,the color graphic design information may include a single set of graphicinformation for representing a color graphic. Referring to FIG. 5, acolor graphic included in color graphic design information 189 may berepresented by a single set of graphic information, such as a singleimage and/or single image file. In some embodiments, the color graphicdesign information may include multiple sets of graphic information. Forexample, a first set of graphic information included in color graphicdesign information 189 may represent a first portion of a color graphic.In the example, a second set of graphic information included in colorgraphic design information 189 may represent a second portion of thecolor graphic. In the example, a third set of graphic informationincluded in color graphic design information 189 may represent a thirdportion of the color graphic included in color graphic designinformation 189. In other embodiments, the color graphic design mayinclude a different number of sets of graphic information.

Generally, the color graphic design information may use any suitableformat, protocol, and/or topology. In some embodiments, a set of graphicinformation of the color graphic design information may be a digitalimage or image file. For example, a set of graphic information may be animage file using a raster format, vector format, compound format, and/orstereo format. Examples of raster formats may include joint photographicexperts group (JPEG), tagged image file format (TIFF), graphicsinterchange format (GIF), bitmap image file (BMP), portable networksgraphics (PNG), and the like. Examples of vector formats may includecomputer graphics metafile (CGM), Gerber format (GERBER), scalablevector graphics (SVG), and the like. Examples of compound formats mayinclude portable document format (PDF), encapsulated PostScript,PostScript, and the like. Examples of stereo format may include JPEGstereo (JPS), portable networks graphics (PSN), and the like. It shouldbe understood that some image files may support multiple layers suchthat multiple sets of graphic information may be stored in a singleimage file. In other embodiments, the color graphic design may bedifferent.

In some embodiments, the color graphic design information may indicate atarget color composition of one or more pigments. As used herein, atarget color composition may refer to a volume of print material foreach color of CMYK printing. For example, a target color composition mayinclude 20 droplets of cyan print material, 20 droplets of magenta printmaterial, 20 droplets of yellow print material, 20 droplets of key printmaterial, 20 droplets of clear print material, and/or 20 droplets ofwhite print material. In other embodiments, the color graphic design mayindicate a target color composition differently.

In some embodiments, the color graphic design information may include atarget color for each pixel of a set of graphic information. Forexample, a set of graphic information may include a first pixel having agreen target color and a second pixel having a red target color. Inother embodiments, the color graphic design may be different.

In some embodiments, the target color of a pixel of a set of graphicinformation may indicate a target color composition of a correspondingregion of a substrate. For example, a first pixel having a green targetcolor may be printed using 20 droplets of cyan print material and 20droplets of yellow print material to form a green region of a substrate,and a second pixel having a red target color may be printed using 20droplets of cyan print material and 20 droplets of magenta printmaterial to form a red region of the substrate. In other embodiments,the target color composition of each region of a substrate may bedetermined differently.

For exemplary purposes only, various embodiments depict the target colorcomposition as a combination of cyan pigment and yellow pigment thatresults in a green color. Accordingly, it should be understood that thetarget color may be any suitable color and the target color compositionmay be any suitable combination of pigments. For example, the targetcolor composition may be any one of the various combinations of printmaterial exemplified by the CMYK Venn diagram shown in FIG. 2.

In some embodiments, the printing device may receive, as in step 204(see FIG. 4), a substrate for printing a three-dimensional object. Insome embodiments, the printing device may receive the substratemanually. Referring to FIG. 5, a human user may place article offootwear 136 onto platform 506 of printing device 102 to permit printingdevice 102 to print directly onto article of footwear 136. In otherembodiments, the printing device may receive the substrateautomatically. For example, the placement of article of footwear 136onto printing device 102 may be automated using one or more loaders (notshown) to place article of footwear 136 (or another substrate) ontoprinting device 102.

Some embodiments can include provisions that permit a substrate to beprocessed to facilitate printing on the substrate. In some embodiments,processing the substrate may include shaping. In some embodiments,processing the substrate may include treating or finishing an exposedsurface of an article. In some embodiments, processing a substrate mayinclude using CMYK printing to prepare a substrate to receive athree-dimensional object. In other embodiments, a processing of thesubstrate may be omitted.

In embodiments where processing a substrate may include using CMYKprinting to prepare a substrate to receive a three-dimensional object,any suitable CMYK printing may be used to prepare a substrate to receivethe three-dimensional object. In some embodiments, CMYK printing toprepare a substrate to receive a three-dimensional object may includeprinting a base layer to form a planar print surface. For example, theprinting device may use CMYK printing to form an optional base layerhaving a planar surface for receiving a three-dimensional object (notshown). In other embodiments, CMYK printing may be used to process thesubstrate differently to prepare a substrate to receive athree-dimensional object.

In those embodiments where CMYK printing is used to print an optionalbase layer to form a planar print surface, the base layer may be formedof any suitable materials. In some embodiments, an optional base layermay be formed using clear print material. In some embodiments, anoptional base layer may be formed using white print material. In otherembodiments, other print material may be used to form the base layer.

In some embodiments, the printing device may print, as in step 206 (seeFIG. 4), a lower color graphic layer. For example, the lower colorgraphic layer may be formed using CMYK printing techniques as discussedabove and/or using cyan print material, magenta print material, yellowprint material, key print material, clear print material, white printmaterial, and/or combinations thereof as discussed above. In otherembodiments, other materials and/or techniques may be used to form thelower color graphic layer.

In some embodiments, a set of graphic information representing at leasta portion of a color graphic may be used to facilitate a selection ofprint material for printing the lower color graphic layer. In someembodiments, the set of graphic information may have a same set ofpigments as the color graphic (see FIG. 12). For example, a first set ofgraphic information may include a lighter green that when combined witha lighter green of a second set of graphic information may result in adark green target color of the color graphic. In other embodiments, theset of graphic information may include a first subset or portion ofpigments of the color graphic (see FIG. 20) and another set of graphicinformation may include a second subset of portion of pigments of thecolor graphic. In other embodiments, the set of graphic information maybe omitted.

In some embodiments, a region of the lower color graphic layer may bemapped to a pixel of the set of graphic information. Referring to FIGS.5-6, printing system 100 may assign pixel 504 of color graphic designinformation 189 to first region 610 of lower color graphic layer 620. Itshould be understood that the pixel may be any suitable size and shape,and that the pixel may have any suitable ratio (e.g., 1-1, 2-1, 1-2,)with the region. In other embodiments, the lower color graphic layer maybe printed using the color graphic design information differently.

In some embodiments, the lower color graphic layer may be printed usingthe set of graphic information. In such cases, the printing system mayselect print material to be visually equivalent or identical to a colorassigned to a pixel of the set of graphic information. Referring to FIG.6, printing system 100 may select cyan print material 602 and yellowprint material 604 such that a combination of pigments is visuallyequivalent to a color assigned to pixel 504 (see FIG. 5). That is, forexample, printing system 100 may include cyan print material 602 andyellow print material 604 such that the combination of print materialmay be visually equivalent to the target color composition for a greenassigned to pixel 504. In other embodiments, the print material for aregion may be selected differently.

Some embodiments can include provisions that permit dispensing of printmaterial from multiple cartridges of the printhead assembly to permitprinting of the lower color graphic layer. In other embodiments, printmaterial may be dispensed from a single cartridge of the printheadassembly.

In embodiments where print material may be dispensed from multiplecartridges of the printhead assembly, any suitable combination of printmaterial may be used to permit printing of the lower color graphiclayer. Referring to FIG. 6, first region 610 of lower color graphiclayer 620 may be formed from cyan print material 602 and yellow printmaterial 604. In other embodiments, first region 610 may include othercombinations of print material.

Some embodiments can include provisions that permit intermixing of printmaterial dispensed from multiple cartridges of the printhead assembly.In some embodiments, the print material may be intermixed above thesubstrate. Referring to FIG. 6, cyan print material 602 and yellow printmaterial 604 may intermix before contacting first region 610 of articleof footwear 136. In some embodiments, the print material may beintermixed on the substrate. Referring to FIG. 6, cyan print material602 and yellow print material 604 may intermix on first region 610 ofarticle of footwear 136. In other embodiments, one or more combinationsof CMYK print material may be premixed and dispensed from a singlecartridge (not shown).

Some embodiments can include provisions that permit any suitable printmaterial to be dispensed from the printhead assembly. In someembodiments, the print material may be light curable. Referring to FIG.6, cyan print material 602 and/or yellow print material 604 may be lightcurable. In the example, printing device 102 may dispense cyan printmaterial 602 and/or yellow print material 604 in a liquid form ontofirst region 610 of article of footwear 136. In some embodiments, theprint material may be ultraviolet light curable. Referring to FIG. 6,cyan print material 602 and/or yellow print material 604 may beultraviolet light curable. In other embodiments, the print material maybe different. For example, the print material may include athermoplastic.

In embodiments where print material dispensed from a printhead assemblyis ultraviolet curable, any suitable method may be used to cure theprint material. In some embodiments, a printing system may beprovisioned to include a cure lamp. In other embodiments, a printingsystem may be provisioned to include other devices configured to cure anultraviolet curable print material.

In embodiments where a printing system may be provisioned to include acuring device and to use light curable print material, the curing devicemay emit any suitable light to cure the print material. In someembodiments, the curing device emits ultraviolet light. Referring toFIG. 7, curing device 702 emits ultraviolet light 704 toward firstregion 610 of article of footwear 136 to cure first portion 722 of lowercolor graphic layer 620. In other embodiments, other print material maybe used and/or the curing device may be omitted.

In some embodiments, the curing device may be provisioned to cure printmaterial to transition any amount of the print material from a liquidstate to a solid state. In some embodiments, the curing device may beprovisioned to cure all print material dispensed onto a region of asubstrate to transition the print material from a liquid state to asolid state. In other embodiments, the curing device may be provisionedto cure only a portion of a print material dispensed onto a region of asubstrate to transition the print material from a liquid state to asolid state.

In embodiments where a printing system may be provisioned to intermixprint material, a curing device may cure the print material at anysuitable time. In some embodiments, the curing device cures the printmaterial after the print material intermixes. Referring to FIGS. 6-7,curing device 702 may cure cyan print material 602 and/or yellow printmaterial 604 after cyan print material 602 intermixes. In someembodiments, the curing device cures the print material after reshapingthe substrate (not shown). In other embodiments, the curing device curesthe print material at other times.

In some embodiments, different portions of a color graphic layer mayhave different compositions of print material. Referring to FIG. 8,lower color graphic layer 620 may include first portion 722 formed bydispensing and curing cyan print material 602 and yellow print material604 (see FIG. 6) in first region 610. In the example and referring toFIGS. 8-9, lower color graphic layer 620 may also include second portion924 formed by dispensing and curing clear print material 802 and magentaprint material 804 in second region 862. It should be understood thatthe use of magenta print material is exemplary only and that anysuitable color or no color (e.g., clear) may be used to form the secondportion of the lower color graphic layer. In other embodiments,different portions of the color graphic layer may be formed ofequivalent print material.

In some embodiments, a graphic layer may include any suitable number ofportions having different compositions of print material. In someembodiments, three or more portions may be used to form a lower colorgraphic layer. Referring to FIGS. 9-10, lower color graphic layer 620may further include third portion 1026 formed by dispensing and curingcyan print material 902 and yellow print material 904 in third region928. It should be understood that the use of cyan print material andyellow print material is exemplary only and that any suitable color orno color (e.g., clear) may be used to form the various portions of thelower color graphic layer. In other embodiments, one or two portions maybe used and/or portions of the color graphic layer may be formed ofequivalent print material.

Some embodiments permit a color graphic layer to be formed using anysuitable number of sublayers. For example, as shown in FIGS. 6-9, lowercolor graphic layer 620 may be a single layer that may be formed using asingle pass of a printhead assembly and/or a curing lamp. In otherembodiments, a color graphic layer may be formed of multiple sublayersusing multiple passes of a printhead assembly and/or a curing lamp.

Some embodiments permit the lower color graphic layer to be visible. Insome cases, the structural layer may be transparent to permit the lowercolor graphic layer to be visible. In other embodiments, the lower colorgraphic layer may be visible using other methods.

In some embodiments, the transparent structural layer may be formedusing CMYK printing techniques as discussed above and/or using clearprint material as discussed above. In other embodiments, other materialsand/or techniques may be used to form the transparent structural layer.

In embodiments where the transparent structural layer may be formedusing CMYK printing techniques, any suitable combination of printmaterial may be used. Referring to FIG. 11, transparent structural layer1104 may be printed, as in step 208 (see FIG. 4.), by dispensing clearprint material onto lower color graphic layer 620 and by curing clearprint material. As shown, in some embodiments, lower color graphic layer620 may remain visible after forming transparent structural layer 1104.In other embodiments, other print material may be used.

In some embodiments, the transparent structural layer may be formedusing any suitable number of sublayers and/or passes of a curing lamp.Referring to FIG. 11, transparent structural layer 1104 may be formed ofa single sublayer using a single pass of a printhead assembly and/or acuring lamp. In other embodiments, a structural layer may be formed ofmultiple sublayers using multiple passes of a printhead assembly and/ora curing lamp (not shown).

In some embodiments, the transparent structural layer may have athickness greater than a thickness of a color graphic layer. Referringto FIG. 12, transparent structural layer 1104 may have thickness 1220greater than thickness 1222 of lower color graphic layer 620 and/orthickness 1224 of upper color graphic layer 1208. In other embodiments,the transparent structural layer may have a thickness of equal to orless than a thickness of lower color graphic layer and/or a thickness ofthe upper color graphic layer (not shown).

In some embodiments, the printing device may print, as in step 210 (seeFIG. 4), an upper color graphic layer. In some embodiments, the uppercolor graphic layer may be formed using CMYK printing techniques asdiscussed above and/or using cyan print material, magenta printmaterial, yellow print material, key print material, clear printmaterial, white print material, and/or combinations thereof as discussedabove. In other embodiments, other materials and/or techniques may beused to form the upper color graphic layer. In some embodiments, thecombination of print material used to form the upper color graphic layermay be selected from a set of graphic information. In other embodiments,the combination of print material used may be selected differently.

In some embodiments, the color graphic design information may include asingle set of graphic information representing a portion of a colorgraphic. In such instances, the lower color graphic layer may be printedusing a single set of graphic information and the upper graphic layermay be printed using the single set of graphic information. In otherembodiments, the color graphic design information may include a firstset of graphic information representing a first portion of a colorgraphic and a second set of graphic information representing a secondportion of a color graphic. In such instances, the lower color graphiclayer may be printed using the first set of graphic information and theupper graphic layer may be printed using the second set of graphicinformation. It should be understood that in some embodiments a humanuser may generate each set of graphic information and in otherembodiments the printing system may be configured to automaticallygenerate each set of graphic information from a single set of graphicinformation and/or color graphic design information.

In embodiments where a second set of graphic information representingthe second portion of the color graphic is used, the second set ofgraphic information may have one or more features of the first set ofgraphic information representing the first portion of the color graphic.For example, the second set of graphic information may contain identicalpigments to the color graphic or different pigments to the colorgraphic. In another example, the second set of graphic information mayinclude a color indicating a portion or subset of pigments of the targetcolor composition or second set of graphic information may include acolor indicating the entire target color composition. In otherembodiments, the second set of graphic information may be different fromthe first set of graphic information.

In some embodiments, the second set of graphic information and the firstset of graphic information may have identical pigments. For example, thesecond set of graphic information may include each of the pigments ofthe color graphic, and the first set of graphic information may includeeach of the pigments of the color graphic. In other embodiments, thesecond set of graphic information and the first set of graphicinformation may have different pigments.

In some embodiments, the second set of graphic information may bevisually equivalent to the first set of graphic information. Forexample, the second set of graphic information may have a light greencolor that may be printed using 20 drops of cyan print material and 20drops of yellow print material. In the example, the first set of graphicinformation may have also a light green color that may be printed using20 drops of cyan print material and 20 drops of yellow print material.In other embodiments, the portion of the target color composition of thesecond set of graphic information and the portion of the target colorcomposition of the first set of graphic information may be different.For example, the second set of graphic information may have a dark greencolor that may be printed using 30 drops of cyan print material and 30drops of yellow print material. In the example, the first set of graphicinformation may have a light green color that may be printed using 10drops of cyan print material and 10 drops of yellow print material.

In some embodiments, the combination of the second set of graphicinformation and the first set of graphic information may be visuallyequivalent to the color graphic design. For example, the second set ofgraphic information may have a light green color that may be printedusing 20 drops of cyan print material and 20 drops of yellow printmaterial. In the example, the second set of graphic information may betoo light to be visually equivalent to a color graphic design having adark green target color that may be printed using 50 drops of cyan printmaterial and 50 drops of yellow print material. However, the first setof graphic information may have a light green color that may be printedusing 30 drops of cyan print material and 30 drops of yellow printmaterial. As such, the combination of the second set of graphicinformation and the first set of graphic information may, when viewedtogether, be visually equivalent to the color graphic represented by thecolor graphic design information. Therefore, a combination of an uppercolor graphic layer that is printed using the second set of graphicinformation and a lower color graphic layer that is printed using thefirst set of graphic information may be visually equivalent to thetarget color composition represented by the color graphic. In otherembodiments, the combination of the second set of graphic informationand the first set of graphic information may be visually different fromthe color graphic.

Generally, any suitable combination of print material and/or pigmentsmay be used to form the top layer. Referring to FIG. 12, upper colorgraphic layer 1208 may include first region 1202, second region 1204,and third region 1206, thereby forming three-dimensional object 1210. Inthe example, first region 1202 may be printed by dispensing cyan printmaterial and yellow print material onto transparent structural layer1104. In the example, second region 1204 may be printed by dispensingclear print material and magenta print material onto transparentstructural layer 1104. In the example, third region 1206 may be printedby dispensing cyan print material and yellow print material ontotransparent structural layer 1104. As shown, in some embodiments, lowercolor graphic layer 620 may remain visible after forming upper colorgraphic layer 1208 and transparent structural layer 1104. In otherembodiments, the upper color graphic layer may be formed of differentprint material and/or pigments.

In some embodiments, the upper color graphic layer may have one or morefeatures of the lower color graphic layer. For example, the upper colorgraphic layer may be formed of light curable material and cured by acure lamp. In another example, the upper color graphic layer may permitdispensing of print material from multiple cartridges. In one example,the upper color graphic layer may be formed by intermixing printmaterial above and/or directly onto the structural layer. In yet anotherexample, the upper color graphic layer may have portions havingdifferent compositions of print material. In another example, the uppercolor graphic layer may be formed using any suitable number of sublayersand/or passes of a cure lamp. In other embodiments, the upper colorgraphic layer and the lower color graphic layer may be different.

Referring to FIG. 13, and consistent with an embodiment, an article,such as article of footwear 1300, may include one or morethree-dimensional objects. In some embodiments, a three-dimensionalobject may be printed according to printing techniques discussed hereinwith reference to any of FIGS. 1-12. For example, upper color graphiclayer 1324 of three-dimensional object 1305 may be formed usingtechniques and/or print materials similar to techniques and/or printmaterials used to form upper color graphic layer 1208 (see FIG. 12). Inanother example, transparent structural layer 1322 of three-dimensionalobject 1305 may be formed using techniques and/or print materialssimilar to techniques and/or print materials used to form transparentstructural layer 1104 (see FIG. 11). In a further example, lower colorgraphic layer 1320 of three-dimensional object 1305 may be formed usingtechniques and/or print materials similar to techniques and/or printmaterials used to form lower color graphic layer 620 (see FIG. 6). Inother embodiments, article of footwear 1300 may be printed usingdifferent methods, techniques, and/or materials.

Some embodiments may include provisions for reducing the appearance ofwear-and-tear of the article of footwear. In some cases, suchwear-and-tear may take the form of any number of scratches, abrasions,or mars in the finish of three-dimensional object 1305. While suchdamage to the finish of three-dimensional object 1305 may beundesirable, it may also be unavoidable during the rigors of usedemanded of article of footwear 1300. Therefore, it is desirable tominimize the visibility of any such damage during the usable lifetime ofarticle of footwear 1300. In some cases, such minimization may beachieved by implementing one or more of the printing techniquesdisclosed herein. In other embodiments, other provisions may be used forreducing the appearance of wear-and-tear of the article of footwear.

Consistent with some embodiments and still referring to FIG. 13,exemplary wear-and-tear is shown by abrasion 1310 in article of footwear1300. Light rays passing through lower color graphic layer 1320 layer,transparent structural layer 1322, and upper color graphic layer 1324may not result in a high contrast difference from light rays passingthrough abrasion 1310, lower color graphic layer 1320 layer, andtransparent structural layer 1322. As discussed earlier, an observer mayview a combination of light rays reflected from more than one layer ofthree-dimensional object 1305, as well as from the region exposed byabrasion 1310. That is, three-dimensional object 1305 may includemultiple color graphic layers that may permit abrasion 1310 to appearwith a slightly lighter color or slightly darker color than the overallcolor of three-dimensional object 1305. As shown in FIG. 14, thiscontrasts with what may be observed when viewing light reflectedsimilarly from article of footwear 1400 having only single color graphiclayer 1420 disposed on top of white layer 1422.

Referring to FIG. 14, another exemplary wear-and-tear is also shown byabrasion 1410 in article of footwear 1400. Article of footwear 1400 mayinclude three-dimensional object 1405 having white layer 1422 and singlecolor graphic layer 1420. As shown, single color graphic layer 1420forms an exposed surface of three-dimensional object 1405. Light rayspassing through three-dimensional object 1405 may result in a highcontrast difference between three-dimensional object 1405 and that ofabrasion 1410. An observer may view light that has passed through theopening exposed by abrasion 1410 and reflected off of white layer 1422back to the observer. The light may also pass through and be reflectedfrom one or more portions of abrasion 1410. Thus, when viewingthree-dimensional object 1405 and abrasion 1410, abrasion 1410 mayappear with a high contrast difference against three-dimensional object1405 due to the exposure of white layer 1422. As also shown in FIG. 14,abrasion 1410 may appear as a white mark relative to the balance ofthree-dimensional object 1405.

Consistent with an embodiment, color durability may be achievedaccording to the disclosed techniques. That is, damage due toscratching, abrasion, or otherwise marring a surface printed usingdisclosed techniques may be less visible upon observation than similardamage inflicted on a surface printing using existing techniques. Colorprinting according to the disclosed techniques may be more durable anddamage may be less visible.

Some embodiments can include provisions that permit protection fromerosion and/or abrasion. In some cases, the protection from erosionand/or abrasion may be permitted by use of a protective transparentlayer. In other cases, the protection from erosion and/or abrasion maybe permitted by using other techniques, materials, and/or methods.

In those instances where a protective transparent layer is used, anysuitable material and/or technique may be used to form the protectivetransparent layer. In some embodiments, the protective transparent layermay be formed using CMYK printing techniques as discussed above and/orusing clear print material as discussed above. Referring to FIG. 15,article of footwear 1500 may be substantially similar to article offootwear 1300 except that article of footwear 1500 may further includean optional protective transparent layer 1508. In the example, optionalprotective transparent layer 1508 may prevent erosion of upper colorgraphic layer 1324. As illustrated in FIG. 15, optional protectivetransparent layer 1508 may provide protection from abrasion. Forexample, abrasion 1502 may extend into a smaller portion of upper colorgraphic layer 1324 than abrasion 1310 extends into upper color graphiclayer 1324 of FIG. 13. In other embodiments, a protective transparentlayer may be omitted (see FIG. 13) and/or other provisions forprotection from erosion and/or abrasion may be used.

In some embodiments, the protective transparent layer may have athickness greater than a thickness of a color graphic layer. Referringto FIG. 15, optional protective transparent layer 1508 may havethickness 1509. In the example, thickness 1509 may be greater thanthickness 1507 of upper color graphic layer 1324. In other embodiments,the protective transparent layer may have a thickness equal to athickness of a color graphic layer (see FIG. 19). In yet otherembodiments, the protective transparent layer may have a thickness lessthan a thickness of a color graphic layer (not shown).

Some embodiments permit use of a non-white substrate. As used herein, anon-white substrate may include an exposed surface of a substrate thatincludes one or more non-white pigments. For example, a non-whitesubstrate may include an exposed surface having at least a portionappearing off-white, gray, or black. In another example, a non-whitesubstrate may include an exposed surface having an appearance thatincludes any non-white color in the visible color spectrum. In someembodiments, a non-white substrate may have different color propertiesat different positions of the non-white substrate. For example, a firstportion of a non-white substrate may have a bright white appearancewhile a second portion of the non-white substrate may have an off-white,dark white, or gray appearance. In other embodiments, a non-whitesubstrate may be different.

Generally, the non-white substrate may be formed of any suitablematerial. Such material may include, for example, textile, naturalfabric, synthetic fabric, knit, woven material, nonwoven material, mesh,leather, synthetic leather, polymer, rubber, and foam, or anycombination of them. Referring to FIG. 16, non-white substrate 1612 maybe formed using a fiber or yarn to achieve a desired strength for aresulting article of footwear. In other embodiments, a non-whitesubstrate may be formed of other materials.

Generally, the white layer may be formed using any suitable method,technique, and/or material to permit a three-dimensional object to havea consistent appearance. In some embodiments, the white layer may beformed using CMYK printing techniques as discussed above and/or usingwhite print material as discussed above. Referring to FIG. 17, whitelayer 1702 may be formed onto non-white substrate 1612. In the example,printing device 102 may print white layer 1702 by dispensing white printmaterial onto non-white substrate 1612 and by curing the white materialafter dispensing. In other embodiments, the white layer may be formedusing other methods, techniques, and/or print materials.

Generally, any suitable combination of layers may be formed onto thewhite layer. In some embodiments, a lower color graphic layer, atransparent structural layer, and an upper color graphic layer may beformed onto the white layer. In some embodiments, a lower color graphiclayer, a transparent structural layer, an intermediate color graphiclayer, an intermediate transparent structural layer, and an upper colorgraphic layer may be formed on the white layer (see FIG. 21). In someembodiments, a lower color graphic layer, an opaque structural layer, anintermediate color graphic layer, an intermediate opaque structurallayer, and an upper color graphic layer may be formed on the white layer(see FIG. 22). In other embodiments, fewer and/or additional layers maybe formed on the white layer.

In embodiments where a lower color graphic layer is used with a whitelayer, the lower color graphic layer may be formed using any suitabletechnique. In some embodiments, the lower color graphic layer may beformed using CMYK printing techniques as discussed above with respect toFIGS. 1-12. Referring to FIG. 18, lower color graphic layer 1804 may beformed using techniques and/or print materials similar to techniquesand/or print materials used to form lower color graphic layer 620 (seeFIG. 6). In the example, the printing device may print region 1852 oflower color graphic layer 1804 and region 1854 of lower color graphiclayer 1804 using cyan print material and yellow print material. In theexample, the printing device may print region 1856 of lower colorgraphic layer 1804 and region 1858 of lower color graphic layer 1804using magenta print material and clear print material. In otherembodiments, the lower color graphic layer may be formed differently.

In embodiments where a transparent structural layer is used with a whitelayer, the transparent structural layer may be formed using any suitabletechnique. In some embodiments, the transparent structural layer may beformed using CMYK printing techniques as discussed above with respect toFIGS. 1-12. Referring to FIG. 18, transparent structural layer 1806 maybe formed using techniques and/or print materials similar to techniquesand/or print materials used to form transparent structural layer 1104(see FIG. 11). In the example, the printing device may print transparentstructural layer 1806 using clear print material. In other embodiments,the transparent structural layer may be formed differently.

In embodiments where an upper color graphic layer is used with a whitelayer, the upper color graphic layer may be formed using any suitabletechnique. In some embodiments, the upper color graphic layer may beformed using CMYK printing techniques as discussed above with respect toFIGS. 1-12. Referring to FIG. 18, upper color graphic layer 1808 may beformed using techniques and/or print materials similar to techniquesand/or print materials used to form upper color graphic layer 1208 (seeFIG. 12). In the example, the printing device may print region 1852 ofupper color graphic layer 1808 and region 1854 of upper color graphiclayer 1808 using cyan print material and yellow print material. In theexample, the printing device may print region 1856 of upper colorgraphic layer 1808 and region 1858 of upper color graphic layer 1808using magenta print material and clear print material. In otherembodiments, the upper color graphic layer may be formed differently.

Some embodiments can include provisions that permit protection fromerosion and/or abrasion of three-dimensional objects printed onnon-white substrates. In some cases, the protection from erosion and/orabrasion may be permitted by use of an optional protective transparentlayer. In other cases, the protection from erosion and/or abrasion maybe permitted by using other techniques, materials, and/or methods.

In embodiments where a protective transparent layer is used to permitprotection from erosion and/or abrasion of three-dimensional objectsprinted on non-white substrates, any suitable materials and/ortechniques may be used to form the protective transparent layer. Forexample, the protective transparent layer may be formed using CMYKprinting techniques as discussed above and/or using clear print materialas discussed above with respect to FIG. 15. Referring to FIG. 19,protective transparent layer 1908 may prevent erosion of upper colorgraphic layer 1808. Additionally, protective transparent layer 1908 mayprovide protection from abrasion. In other embodiments, a protectivetransparent layer may be omitted (see FIG. 18) and/or other provisionsfor protection from erosion and/or abrasion may be used.

In some embodiments, the protective transparent layer may have athickness equal to a thickness of a color graphic layer. Referring toFIG. 19 protective transparent layer 1908 has thickness 1909 equal tothickness 1907 of upper color graphic layer 1808. In other embodiments,the protective transparent layer may have a thickness greater than athickness of a color graphic layer (see FIG. 15). In yet otherembodiments, the protective transparent layer may have a thickness lessthan a thickness of a color graphic layer (not shown).

Some embodiments may include provisions for improving an appearance ofthe three-dimensional object. In some cases, a second set of graphicinformation representing a second portion of a color graphic and a firstset of graphic information representing a first portion of the colorgraphic may have different pigments, to allow an aesthetic effect. Inother cases, the second set of graphic information and the first set ofgraphic information may have identical pigments (see FIG. 12).

Generally, a set of graphic information may have one or more pigmentsomitted from another set of graphic information. In some embodiments,the second set of graphic information may have one or more pigmentsomitted from the first set of graphic information. Similarly, in someembodiments, the first set of graphic information may have one or morepigments omitted from the second set of graphic information. Forexample, the printing system may designate a pixel of the first set ofgraphic information as yellow and designate a pixel of a second set ofgraphic information as cyan when a pixel of the color graphic is green.In the example, the printing device may print a region of the lowercolor graphic layer that corresponds with the pixel using yellow printmaterial and print another color graphic layer using cyan print materialsuch that a combination of the first set of graphic information, yellow,and the second set of graphic information, cyan, is visually equivalentto the color graphic, green. In other embodiments, a single combinationof one or more pigments may be included in each set of graphicinformation of color graphic design information.

In some embodiments, printed color graphic layers may include differentprint material and/or pigments. It should be understood that suchprovisions may be implemented in any suitable three-dimensional object.For example, three-dimensional object 2002 may further include aprotective transparent layer (not shown). In another example,three-dimensional object 2002 may further include a white layer (notshown). In another example, three-dimensional object 2002 (see FIG. 20)may further include a transparent base layer (not shown). Referring toFIG. 20, lower color graphic layer 2004 of three-dimensional object 2002may be formed of yellow print material. In the example, upper colorgraphic layer 2010 at first region 2012 of three-dimensional object 2002may be formed of cyan print material. In the example, transparentstructural layer 2006 allows a viewer to see a combination of thepigments of upper color graphic layer 2010 and lower color graphic layer2004 at first region 2012, for example, green. In other embodiments,different combinations of print material may be used.

Some embodiments include provisions that permit simplified printing of acolor graphic layer. In some instances, printing may be simplified bymaintaining a print material and/or pigments of a color graphic layerwhile changing a print material and/or pigments of another color graphiclayer. Referring to FIG. 20, second region 2014 may be similar to firstregion 2012 except that upper color graphic layer 2010 at second region2014 is formed of magenta print material instead of cyan print material.As shown, three-dimensional object 2002 may appear to be green in firstregion 2012 and blue in second region 2014. In this manner, printing maybe simplified since pigments of lower color graphic layer 2004 may bemaintained (e.g., yellow print material) while allowingthree-dimensional object 2002 to appear to have different colors. Inother embodiments, printing may be simplified using other methods,techniques, and technologies.

Some embodiments can include provisions that permit durability fromabrasion of portions of a three-dimensional object. In some embodiments,one or more intermediate color graphic layers may be used to facilitatean improved durability from abrasion of portions of a three-dimensionalobject. It should be understood that although a single intermediatecolor graphic layer is illustrated in the figures, any suitable numberof intermediate color graphic layers may be used. As used herein, one ormore intermediate color graphic layers may refer to one or more layershaving pigments that are separated by structural layers. As describedfurther, such structural layers may be transparent, opaque, and/ortranslucent. In other embodiments, other provisions may be included tofacilitate an improved durability from abrasion of portions of athree-dimensional object. For example, the three-dimensional object mayinclude a protective layer.

In some embodiments, one or more intermediate color graphic layers maybe positioned between an upper color graphic layer and a lower colorgraphic layer. Referring to FIG. 21, intermediate color graphic layer2106 may be positioned between upper color graphic layer 2110 and lowercolor graphic layer 2102. In other embodiments, one or more intermediatecolor graphic layers may be positioned differently.

In some embodiments, the combination of print material used to form theintermediate color graphic layer may be selected according to a set ofgraphic information of color graphic design information. In someembodiments, the color graphic design information may include a singleset of graphic information representing a portion of a color graphic. Insuch instances, the lower color graphic layer may be printed using asingle set of graphic information, the upper graphic layer may beprinted using the single set of graphic information, and theintermediate color graphic layer may be printed using the single set ofgraphic information. In other embodiments, the color graphic designinformation may include a first set of graphic information representinga first portion of a color graphic, a second set of graphic informationrepresenting a second portion of a color graphic, and a third set ofgraphic information representing an intermediate portion of the colorgraphic. In such instances, the lower color graphic layer may be printedusing the first set of graphic information, the intermediate graphiclayer may be printed using the third set of graphic information, and theupper graphic layer may be printed using the second set of graphicinformation.

In embodiments where a third set of graphic information representing anintermediate portion of the color graphic is used, the third set ofgraphic information may have one or more features of the first set ofgraphic information representing the first portion of the color graphicand/or the second set of graphic information representing the secondportion of the color graphic. For example, the third set of graphicinformation may contain identical pigments to the color graphic ordifferent pigments to the color graphic. In another example, the thirdset of graphic information may have a color that may be printed usingonly a portion of the target color composition or the third set ofgraphic information may have a color that may be printed using theentire target color composition. In other embodiments, the third set ofgraphic information may be different from the first set of graphicinformation and/or the second set of graphic information.

In some embodiments, each set of graphic information included in thecolor graphic design information may have identical pigments. Forexample, the third set of graphic information may include each of thepigments of the color graphic, the first set of graphic information mayinclude each of the pigments of the color graphic, and the second set ofgraphic information may include each of the pigments of the colorgraphic. In other embodiments, different sets of graphic information mayhave different pigments.

In some embodiments, the third set of graphic information representingthe intermediate portion of the color graphic may be visually equivalentto the first set of graphic information representing the first portionof the color graphic and/or the second set of graphic informationrepresenting the second portion of the color graphic. For example, thethird set of graphic information may indicate 20 drops of cyan printmaterial and 20 drops of yellow print material. In the example, thefirst set of graphic information may indicate 20 drops of cyan printmaterial and 20 drops of yellow print material, and the second set ofgraphic information may indicate 20 drops of cyan print material and 20drops of yellow print material. In other embodiments, the third set ofgraphic information, the second set of graphic information, and/or thefirst set of graphic information may be visually different.

Generally, a combination of each set of graphic information included incolor graphic design information may be visually equivalent to the colorgraphic design. In embodiments using an upper color graphic layer, anintermediate color graphic layer, and a lower color graphic layer, acombination of the third set of graphic information, the second set ofgraphic information, and the first set of graphic information may bevisually equivalent to the color graphic design. For example, the thirdset of graphic information may indicate 20 drops of cyan print materialand 20 drops of yellow print material. In the example, the second set ofgraphic information may indicate 20 drops of cyan print material and 20drops of yellow print material. In the example, the combination of thesecond set of graphic information and the third set of graphicinformation may be too light to be visually equivalent to a colorgraphic indicating 70 drops of cyan print material and 70 drops ofyellow print material. However, the first set of graphic information mayindicate 30 drops of cyan print material and 30 drops of yellow printmaterial. As such, the combination of the first set of graphicinformation, the second set of graphic information, and the third set ofgraphic information may be visually equivalent to the color graphicdesign. In other embodiments, the combination of each set of graphicinformation included in color graphic design information may be visuallydifferent to the color graphic.

In some embodiments, one or more intermediate color graphic layers maybe formed using CMYK printing techniques as discussed above and/or usingcyan print material, magenta print material, yellow print material, keyprint material, clear print material, white print material, and/orcombinations thereof as discussed above. Referring to FIG. 21,intermediate color graphic layer 2106 may be printed by dispensing cyanprint material and yellow print material. In other embodiments, othermaterials and/or techniques may be used to form one or more intermediatecolor graphic layers.

In some embodiments, one or more intermediate color graphic layers mayeach have one or more features of the lower color graphic layer and/orthe upper color graphic layer. For example, one or more intermediatecolor graphic layers may be formed of light curable material and curedby a cure lamp. In another example, one or more intermediate colorgraphic layers may permit dispensing of print material from multiplecartridges. In one example, one or more intermediate color graphiclayers may be formed by intermixing print material above and/or directlyonto the structural layer. In yet another example, one or moreintermediate color graphic layers may have portions having differentcompositions of print material. In another example, one or moreintermediate color graphic layers may be formed using any suitablenumber of sublayers and/or passes of a cure lamp. In other embodiments,one or more intermediate color graphic layers may be different than theupper color graphic layer and/or the lower color graphic layer.

In some embodiments, each intermediate color graphic layer may beprinted with a corresponding transparent structural layer. For example,as shown in FIG. 21, three-dimensional object 2100 may includeintermediate color graphic layer 2106 printed onto an uppermost layer ofone or more inner transparent structural layers 2104. In thisembodiment, inner transparent structural layers 2104 are comprised ofinner transparent structural layer 2103 and inner transparent structurallayer 2105. In other embodiments, one, two, three or more innertransparent structural layers could be used. In the example,intermediate color graphic layer 2106 may be printed with acorresponding one or more upper (or outer) transparent structural layers2108. In this embodiment, upper transparent structural layers 2108 arefurther comprised of upper transparent structural layer 2107 and uppertransparent structural layer 2109. In other embodiments, one, two, threeor more upper transparent structural layers could be used. It should beunderstood that a three-dimensional object may include any suitablenumber of pairs of an intermediate color graphic layer and acorresponding transparent structural layer. In other embodiments, thecorresponding transparent structural layer may be omitted.

Generally, any suitable materials and/or techniques may be used to formthe inner transparent structural layer and/or the outer transparentstructural layer. In some embodiments, the inner transparent structurallayer and/or the outer transparent structural layer transparentstructural layer may have one or more features of a transparentstructural layer discussed above with respect to FIG. 11. For example,the inner transparent structural layer and/or the outer transparentstructural layer transparent structural layer may be formed of clearprint material and cured by a cure lamp. In another example, the innertransparent structural layer and/or the outer transparent structurallayer transparent structural layer may permit dispensing of printmaterial from multiple cartridges. In one example, the inner transparentstructural layer and/or the outer transparent structural layertransparent structural layer may be formed by intermixing print materialabove and/or directly onto the structural layer. In another example, theinner transparent structural layer and/or the outer transparentstructural layer transparent structural layer may be formed using anysuitable number of sublayers and/or passes of a cure lamp. In otherembodiments, the inner transparent structural layer and/or the outertransparent structural layer transparent structural layer and thetransparent structural layer may be different.

In embodiments where an intermediate color graphic layer is used to forma three-dimensional object, the three-dimensional object may have anysuitable number and type of layers to facilitate a formation of thethree-dimensional object. In some embodiments, the three-dimensionalobject may include a lower color graphic layer, an inner transparentstructural layer, an intermediate color graphic layer, an outertransparent structural layer, and an upper color graphic layer. In otherembodiments, the three-dimensional object may be different.

In some embodiments, the lower color graphic layer used in athree-dimensional object having an intermediate color graphic layer mayhave one or more features of lower color graphic layer 620 illustratedin FIG. 10. For example, referring to FIG. 21, lower color graphic layer2102 of three-dimensional object 2100 may be formed of cyan printmaterial and yellow print material and cured by a cure lamp. In anotherexample, lower color graphic layer 2102 may be formed using printmaterial from multiple cartridges. In another example, lower colorgraphic layer 2102 may be formed by intermixing print material aboveand/or directly onto the structural layer. In yet another example, lowercolor graphic layer 2102 may have regions having different compositionsof print material. In another example, lower color graphic layer 2102may be formed using any suitable number of sublayers and/or passes of acure lamp. In other embodiments, the lower color graphic layer used in athree-dimensional object having an intermediate color graphic layer maybe different.

In some embodiments, the upper color graphic layer used in athree-dimensional object having an intermediate color graphic layer mayhave one or more features of upper color graphic layer 1208 illustratedin FIG. 12. Referring to FIG. 21, upper color graphic layer 2110 may beformed of cyan print material and yellow print material and cured by acure lamp. In another example, upper color graphic layer 2110 may beformed using print material from multiple cartridges. In anotherexample, upper color graphic layer 2110 may be formed by intermixingprint material above and/or directly onto the structural layer. In yetanother example, upper color graphic layer 2110 may have regions havingdifferent compositions of print material. In another example, uppercolor graphic layer 2110 may be formed using any suitable number ofsublayers and/or passes of a cure lamp. In other embodiments, the uppercolor graphic layer used in a three-dimensional object having anintermediate color graphic layer may be different.

Some embodiments can include provisions that permit protection fromerosion and/or abrasion of a three-dimensional object having anintermediate color graphic layer. In some cases, the protection fromerosion and/or abrasion may be permitted by use of an optionalprotective transparent layer. In other cases, the protection fromerosion and/or abrasion may be permitted by using other techniques,materials, and/or methods.

In embodiments where a protective transparent layer is used to permitprotection from erosion and/or abrasion of a three-dimensional objecthaving an intermediate color graphic layer, any suitable materialsand/or techniques may be used to form the protective transparent layer.In some embodiments, the protective transparent layer formed in athree-dimensional object having an intermediate color graphic layer maybe similar to the protective transparent layer formed in athree-dimensional object omitting the intermediate color graphic layer(see FIG. 15). For example, the protective transparent layer may beformed using CMYK printing techniques. In another example, theprotective transparent layer may have any suitable thickness. Referringto FIG. 21, protective transparent layer 2112 may be formed of clearprint material. In other embodiments, the protective transparent layerformed in a three-dimensional object having an intermediate colorgraphic layer may be different from the protective transparent layerformed in a three-dimensional object omitting the intermediate colorgraphic layer.

Some embodiments permit printing a three-dimensional object having anintermediate color graphic layer onto a non-white substrate. In somecases, a white layer may be printed onto the non-white substrate topermit the three-dimensional object to have a consistent appearance. Inother cases, the non-white substrate may be printed onto using othermethods, techniques, and/or materials.

In embodiments where a white layer is used with an intermediate colorgraphic layer, the white layer may be formed using any suitable method,technique, and/or material to permit printing on the non-whitesubstrate. Referring to FIG. 21, three-dimensional object 2100 mayoptionally include white layer 2114. In the example, white layer 2114may be formed by dispensing white print material onto non-whitesubstrate 2115 and by curing white print material after dispensing. Inother embodiments, the white layer may be formed using other methods,techniques, and/or print materials.

Some embodiments permit printing a three-dimensional object having anintermediate color graphic layer onto a non-planar substrate. In somecases, a transparent base layer may be printed onto the non-planarsubstrate to permit the three-dimensional object to have a desiredprofile. It should be understood that the transparent base layer may beoptionally formed onto any suitable substrate, for example, on a planarsubstrate (not shown). In other cases, the non-planar substrate may beprinted onto using other methods, techniques, and/or materials.

In embodiments where a transparent base layer is used with anintermediate color graphic layer, the transparent base layer may beformed using any suitable method, technique, and/or material to permitprinting on the non-planar substrate. For example, the transparent baselayer may be formed using CMYK printing techniques as discussed above.Referring to FIG. 21, three-dimensional object 2100 may optionallyinclude transparent base layer 2116. In the example, transparent baselayer 2116 may be formed by dispensing clear print material ontonon-planar substrate 2117 and by curing the clear print material afterdispensing. In other embodiments, the transparent base layer may beformed using other methods, techniques, and/or print materials.

Some embodiments can include provisions that permit underlying layers tobecome visible to an observer after an abrasion of upper layers. In someembodiments, an opaque structural layer may separate color graphiclayers to permit underlying layers to become visible to an observerafter an abrasion of upper layers. In other embodiments, other provisionmay be used that permit underlying layers to become visible to anobserver after an abrasion of upper layers.

In embodiments where an opaque structural layer is used to permitunderlying layers to become visible to an observer after an abrasion ofupper layers, the opaque structural layer may be formed using anysuitable method, technique, and/or material. For example, the opaquestructural layer may be formed using CMYK printing techniques asdiscussed above and/or using white print material as discussed above. Inother embodiments, the opaque structural layer may be formed using othermethods, techniques, and/or print materials.

Generally, the opaque structural layer may be formed using any suitableprint material. In some embodiments, the opaque structural layer may beformed using white pigments. Referring to FIG. 22, one or more inneropaque structural layers 2206 (i.e., layer 2205 and layer 2207) may beformed onto lower color graphic layer 2204. In the example, the printingdevice may form one or more inner opaque structural layers 2206 bydispensing white print material and by curing white print material afterdispensing. In other embodiments, the opaque structural layer may beformed using different pigments and/or print materials.

Generally, any suitable number of opaque structural layers may be used.Referring to FIG. 22, three-dimensional object 2200 may include one ormore outer opaque structural layers 2210. In some embodiments, more thantwo opaque structural layers may be used. In other embodiments, a singleopaque structural layer may be used.

In some embodiments, the opaque structural layers may be formed usingsimilar methods, techniques, and/or materials. Referring to FIG. 22, oneor more outer opaque structural layers 2210 (e.g., layer 2207 and layer2209) may be formed onto intermediate color graphic layer 2208 using themethod, technique, and/or material used to form one or more inner opaquestructural layers 2206 onto lower color graphic layer 2204. In theexample, the printing device may print one or more outer opaquestructural layers 2210 by dispensing white print material and by curingthe white print material after dispensing. In other embodiments, one ormore of the opaque structural layers may be formed differently from theother opaque structural layers (not shown).

In embodiments where an opaque structural layer is used to print athree-dimensional object, the three-dimensional object may be formed ofany suitable color graphic layers. In some embodiments, thethree-dimensional object may include a lower color graphic layer, anintermediate color graphic layer, and an upper color graphic layer. Insome embodiments, the three-dimensional object may include a lower colorgraphic layer, multiple intermediate color graphic layers, and an uppercolor graphic layer. In some embodiments, the three-dimensional objectmay include an upper color graphic layer and a lower color graphiclayer. In other embodiments, a three-dimensional object having an opaquestructural layer may be different.

In some embodiments, the lower color graphic layer used in athree-dimensional object having an opaque structural layer may have oneor more features of lower color graphic layer 620 illustrated in FIG.10. Referring to FIG. 22, lower color graphic layer 2204 ofthree-dimensional object 2200 may be formed of cyan print material andyellow print material and cured by a cure lamp. In another example,lower color graphic layer 2204 may be formed using print material frommultiple cartridges. In another example, lower color graphic layer 2204may be formed by intermixing print material above and/or directly ontothe structural layer. In yet another example, lower color graphic layer2204 may have regions having different compositions of print material.In another example, lower color graphic layer 2204 may be formed usingany suitable number of sublayers and/or passes of a cure lamp. In otherembodiments, the lower color graphic layer used in a three-dimensionalobject having an opaque structural layer may be different.

In some embodiments, the intermediate color graphic layer used in athree-dimensional object having an opaque structural layer may have oneor more features of intermediate color graphic layer 2106 illustrated inFIG. 21. For example, referring to FIG. 22, intermediate color graphiclayer 2208 of three-dimensional object 2200 may be formed of cyan printmaterial and yellow print material and cured by a cure lamp. In anotherexample, intermediate color graphic layer 2208 may be formed using printmaterial from multiple cartridges. In another example, intermediatecolor graphic layer 2208 may be formed by intermixing print materialabove and/or directly onto the structural layer. In yet another example,intermediate color graphic layer 2208 may have regions having differentcompositions of print material. In another example, intermediate colorgraphic layer 2208 may be formed using any suitable number of sublayersand/or passes of a cure lamp. In other embodiments, the intermediatecolor graphic layer used in a three-dimensional object having an opaquestructural layer may be different.

In some embodiments, the intermediate color graphic layer may be formedwith a corresponding opaque structural layer. Referring to FIG. 22,three-dimensional object 2200 may include intermediate color graphiclayer 2208 having a one or more corresponding outer opaque structurallayers 2210. Although only one pair of an intermediate color graphiclayer and a corresponding opaque structural layer is shown in FIG. 22,it should be understood that a three-dimensional object may include anysuitable number of pairs of an intermediate color graphic layer and acorresponding opaque structural layer. In other embodiments, acorresponding opaque structural layer may be omitted.

In some embodiments, the upper color graphic layer used in athree-dimensional object having an opaque structural layer may have oneor more features of upper color graphic layer 1208 illustrated in FIG.12. Referring to FIG. 22, upper color graphic layer 2212 may be formedof cyan print material and yellow print material and cured by a curelamp. In another example, upper color graphic layer 2212 may be formedusing print material from multiple cartridges. In another example, uppercolor graphic layer 2212 may be formed by intermixing print materialabove and/or directly onto the structural layer. In yet another example,upper color graphic layer 2212 may have regions having differentcompositions of print material. In another example, upper color graphiclayer 2212 may be formed using any suitable number of sublayers and/orpasses of a cure lamp. In other embodiments, the upper color graphiclayer used in a three-dimensional object having an opaque structurallayer may be different.

In some embodiments, one or more opaque structural layers may separatethe color graphic layers of a three-dimensional object. Referring toFIG. 22, one or more inner opaque structural layers 2206 (e.g., layer2205 and layer 2207) separates lower color graphic layer 2204 andintermediate color graphic layer 2208. In the example, one or more outeropaque structural layers 2210 separates intermediate color graphic layer2208 and upper color graphic layer 2212. In this arrangement, layers maybe worn down to reveal an underlying color graphic layer. In otherembodiments, the opaque structural layers may be positioned differentlywithin the three-dimensional object.

Generally, the color graphic layers of a three-dimensional object havingan opaque structural layer may be printed using any suitable techniques.In some embodiments, the color graphic layers may be printed using asingle set of graphic information representing a portion of a colorgraphic. In such instances, the lower color graphic layer may be printedusing the single set of graphic information, the intermediate colorgraphic layer may be printed using the single set of graphicinformation, and the upper graphic layer may be printed using the singleset of graphic information. In other embodiments, the color graphicdesign information may include a first set of graphic informationrepresenting a first portion of a color graphic, a second set of graphicinformation representing a second portion of a color graphic, and athird set of graphic information representing an intermediate portion ofthe color graphic. In such instances, the lower color graphic layer maybe printed using the first set of graphic information, the intermediategraphic layer may be printed using the third set of graphic information,and the upper graphic layer may be printed using the second set ofgraphic information.

In some embodiments, different sets of graphic information included incolor graphic design information may be visually equivalent to eachother. For example, the third set of graphic information may include acolor that may be printed using 70 drops of cyan print material and 70drops of yellow print material. In the example, the first set of graphicinformation may include a color that may be printed using 70 drops ofcyan print material and 70 drops of yellow print material, and thesecond set of graphic information may include a color that may beprinted using 70 drops of cyan print material and 70 drops of yellowprint material. In other embodiments, different sets of graphicinformation may be visually different.

In some embodiments, different sets of graphic information included incolor graphic design information may be visually equivalent or identicalto the color graphic. For example, the third set of graphic informationmay include a color that may be printed using 70 drops of cyan printmaterial and 70 drops of yellow print material. In the example, thesecond set of graphic information may include a color that may beprinted using 70 drops of cyan print material and 70 drops of yellowprint material. In the example, the first set of graphic information mayinclude a color that may be printed using 70 drops of cyan printmaterial and 70 drops of yellow print material. In the example, each ofthe first set of graphic information, the second set of graphicinformation, and the third set of graphic information may be visuallyequivalent to the color graphic. In other embodiments, different sets ofgraphic information included in color graphic design information may bevisually different to the color graphic.

In some embodiments, the intermediate color graphic layer, the uppercolor graphic layer, and the lower color graphic layer may have the samecombination of pigments. Referring to FIG. 22, lower color graphic layer2204 of three-dimensional object 2200 may be formed of cyan printmaterial and yellow print material, intermediate color graphic layer2208 may be formed of cyan print material and yellow print material, andupper color graphic layer 2212 may be formed of cyan print material andyellow print material. In the example, one or more inner opaquestructural layers 2206 may be formed of white print material, and one ormore outer opaque structural layers 2210 may be formed of white printmaterial. In other embodiments, the color graphic layers of athree-dimensional object having an opaque structural layer may havedifferent combinations of pigments.

In some embodiments, the opaque structural layer may have a thicknessless than a thickness of the color graphic layers. Referring to FIG. 22,one or more inner opaque structural layers 2206 may have thickness 2286that is less than thickness 2284 of lower color graphic layer 2204. Inother embodiments, the opaque structural layer may have a thicknessgreater than or equal to the color graphic layers.

In embodiments where an opaque structural layer is used, a protectivetransparent layer may be provided to facilitate an improved abrasionresistance. Referring to FIG. 22, three-dimensional object 2200 mayoptionally include protective transparent layer 2214. In those instanceswhere a protective transparent layer is included, the protectivetransparent layer may be substantially similar to a protectivetransparent layer used for three-dimensional objects using transparentstructural layers. For example, protective transparent layer 2214 ofFIG. 22 may be formed of clear print material and may be substantiallysimilar to protective transparent layer 1508 of FIG. 15 and/orprotective transparent layer 2112 of FIG. 21. In other embodiments, theprotective transparent layer may be formed differently.

In some embodiments, a three-dimensional object having an opaquestructural layer may be printed with a white layer to permit printingonto a non-white substrate. Referring to FIG. 22, three-dimensionalobject 2200 may optionally include white layer 2202. In those instanceswhere white layer 2202 is used, white layer 2202 may be substantiallysimilar to a white layer used for three-dimensional objects using atransparent structural layer. For example, white layer 2202 of FIG. 22may be substantially similar to white layer 1702 of FIG. 17 and/or whitelayer 2114 of FIG. 21. In the example, white layer 2202 may be formed bydispensing white print material onto non-white substrate 2203 and bycuring white print material after dispensing. In other embodiments, thewhite layer may be omitted.

Some embodiments permit printing a three-dimensional object having anopaque structural layer onto a non-planar substrate. In some cases, atransparent base layer may be printed onto the non-planar substrate topermit the three-dimensional object to have a desired profile. It shouldbe understood that the transparent base layer may be optionally formedonto any suitable substrate, for example, on a planar substrate (notshown). In other cases, the non-planar substrate may be printed ontousing other methods, techniques, and/or materials.

In embodiments where a transparent base layer is used with an opaquestructural layer, the transparent base layer may be formed using anysuitable method, technique, and/or material to permit printing on thenon-planar substrate. For example, the transparent base layer may beformed using CMYK printing techniques as discussed above. Referring toFIG. 22, three-dimensional object 2200 may optionally includetransparent base layer 2116. In the example, transparent base layer 2216may be formed by dispensing clear print material onto non-planarsubstrate 2217 and by curing the clear print material after dispensing.In other embodiments, the transparent base layer may be formed usingother methods, techniques, and/or print materials.

While various embodiments have been described, the description isintended to be exemplary, rather than limiting, and it will be apparentto those of ordinary skill in the art that many more embodiments andimplementations are possible that are within the scope of theembodiments. Any feature of any embodiment may be used in combinationwith or substitute for any other feature or element in any otherembodiment unless specifically restricted. Accordingly, the embodimentsare not to be restricted except in light of the attached claims andtheir equivalents. Also, various modifications and changes may be madewithin the scope of the attached claims.

What is claimed is:
 1. A three-dimensional object printed onto anarticle, the three-dimensional object comprising: a lower color graphiclayer printed onto an article; one or more transparent structural layersprinted onto the lower color graphic layer; and an upper color graphiclayer printed onto an uppermost layer of the one or more transparentstructural layers, wherein the upper color graphic layer and the lowercolor graphic layer collectively visually depict a color graphic image.2. The three-dimensional object of claim 1, wherein the lower colorgraphic layer comprises one or more pigments different than one or morepigments of the upper color graphic layer.
 3. The three-dimensionalobject of claim 1, further comprising a protective transparent layerprinted onto the upper color graphic layer.
 4. The three-dimensionalobject of claim 1, wherein a first portion of the lower color graphiclayer has a different composition of print material than a secondportion of the lower color graphic layer.
 5. The three-dimensionalobject of claim 1, wherein the article is an article of footwear.
 6. Thethree-dimensional object of claim 5, wherein lower color graphic layeris printed onto an upper of the article of footwear.
 7. Thethree-dimensional object of claim 1, wherein the article is an articleof apparel.
 8. A three-dimensional object printed onto an article, thethree-dimensional object comprising: a white layer printed onto anon-white portion of an article; a lower color graphic layer printedonto the white layer; one or more transparent structural layers printedonto the lower color graphic layer; and an upper color graphic layerprinted onto an uppermost layer of the one or more transparentstructural layers, wherein the upper color graphic layer and the lowercolor graphic layer collectively visually depict a color graphic image.9. The three-dimensional object of claim 8, wherein the lower colorgraphic layer comprises one or more pigments different than one or morepigments of the upper color graphic layer.
 10. The three-dimensionalobject of claim 8, further comprising a protective transparent layerprinted onto the upper color graphic layer.
 11. The three-dimensionalobject of claim 8, wherein a first portion of the lower color graphiclayer has a different composition of print material than a secondportion of the lower color graphic layer.
 12. The three-dimensionalobject of claim 8, wherein the article is an article of footwear. 13.The three-dimensional object of claim 12, wherein lower color graphiclayer is printed onto an upper of the article of footwear.
 14. Thethree-dimensional object of claim 8, wherein the article is an articleof apparel.
 15. A three-dimensional object printed onto an article, thethree-dimensional object comprising: a plurality of transparentstructural layers printed onto an article; and a color layer printedonto an uppermost layer of the plurality of transparent structurallayers.
 16. The three-dimensional object of claim 15, wherein the colorlayer is a second color layer, wherein the three-dimensional objectfurther comprises a first color layer, and wherein a lowermost layer ofthe plurality of transparent structural layers is printed onto the firstcolor layer.
 17. The three-dimensional object of claim 16, wherein thefirst color layer and the second color layer collectively visuallydepict a color graphic image.
 18. The three-dimensional object of claim15, wherein the article is an article of footwear.
 19. Thethree-dimensional object of claim 15, wherein the article is an articleof apparel.
 20. A three-dimensional object printed onto an article, thethree-dimensional object comprising: a lower color graphic layer printedonto an article; one or more inner transparent structural layers printedonto the lower color graphic layer; an intermediate color graphic layerprinted onto an uppermost layer of the one or more inner transparentstructural layers; one or more outer transparent structural layersprinted onto the intermediate color graphic layer; and an upper colorgraphic layer printed onto an uppermost layer of the one or more outertransparent structural layers, wherein the upper color graphic layer,the intermediate color graphic layer, and the lower color graphic layercollectively visually depict a color graphic image.
 21. Thethree-dimensional object of claim 20, wherein the lower color graphiclayer comprises one or more pigments different than one or more pigmentsof the intermediate color graphic layer, and wherein the lower colorgraphic layer comprises one or more pigments different than one or morepigments of the upper color graphic layer.
 22. The three-dimensionalobject of claim 20, further comprising a protective transparent layerprinted onto the upper color graphic layer.
 23. The three-dimensionalobject of claim 20, wherein the article is an article of footwear. 24.The three-dimensional object of claim 20, wherein the article is anarticle of apparel.